Expansion joint setting apparatus



July 26, 1938. G. T. NELSON EXPANSION JOIN T SETTING APPARATUS Filed April 3, 1936 r 4 Sheets-Sheet 1 &

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Inventor and A llorneys m Ra 1 July 26, 1938. G. T. NELSON EXPANSION JOINT SETTING APPARATUS Filed "A ril 3, 1936 4 Sheets-Sheet 2 Inventor V Il -Ill Ilal 'eolye fflezson A Home 4 July 26, 1938. G. T. NELSON EXPANSION JOINT SETTING APPARATUS Fild April 3, 1936 4 Sheets-Sheet 3 July 26, 1938. 'G. T. NELSON EXPANSION JOINT SETTING APPARATUS 4 Sheets-Sheet 4 Filed April 3, 1936 mm m w llllllllllllllllllllllllllll J I @eq je TJl/elson and A llornejgs Patented July 26, 1938 UNITED STATES PATENT oFFIcE 5 Claims.

This invention appertains to new and useful improvements in means for setting or placing expansion joints in concrete highways.

The principal object of the present invention is to provide means for properly alining the pins with the sections of the highway so that there is no likelihood of the end of one section rising above the opposed end of an adjacent section.

Another important object of the invention is to provide an apparatus for placing expansion joints in highways which can be easily manipulated, both in setting the expansion pins and subsequently in removing the machine from its point of operation.

A further object of the invention is to provide an apparatus of the character stated which will efficiently hold the joint filler and pins while a power driven finishing machine is crossing over the joint, thus holding the joint strip and pins while concrete is being tamped and finished.

These and various other important objects and advantages of the invention will become apparcut to the reader of the following specification.

In the drawings:

Figure 1 represents a top plan view of the apparatus.

Figure 2 represents a fragmentary side elevational view of the apparatus.

Figure 3 is a cross section on line 3-3 of Figure 2.

Figure 4 is a perspective View of one of the expansion pins.

Figure 5 is a side elevational View of one of the holders. 7 v

Figure 6 is a perspective View showing fragmentarily, one end of the channeled beam.

Figure '7 is a cross section on line of Figure 2.

Figure 8 is a fragmentary side elevational view showing one end of the beam and a modified form of bracket.

Figure 9 is a fragmentary sectional view on line as of Figure 1.

Figure 10 is a sectional view on line lll|0 of Figure 3.

Figure 11 is a section on line H-H of Figure 10.

Figure 12 is a perspective view of the hanger shown in. Figure 9.

Figure 13 is a perspective view of the hand bar.

Figure 14 is a sectionon line Hll4 of Figure 1.

Figure 15 is a fragmentary perspective view showing one end of the slide plate.

Figure 16 is a section on line l5-l6 of Figure 2.

Figure 1'7 is a fragmentary sectional view through a. joint prepared by the present apparatus.

Figure 18 is a top plan view of the hand hook.

Figure 19 is a section on line I9l9 of Figure18.

Figure 20 is a vertical sectional view through a modified form of rod supporting frame.

Figure 21 is a fragmentary side elevational' view.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numerals 5-5 represent the usual side forms, each of which has the upstanding wall a and the tracklike formation b at the top thereof from which depends the flange c.

In carrying out the present invention, there is provided for each of these side forms 5, a bracket such as is shown in Figure 12 for supporting the elongated channeled beam 8. This bracket consists of a plate I bifurcated as at 8 and provided with a transversely extending channel 9. The plate 1 in close spaced relation to the channel 9 is provided with the depending flange I0 and the outstanding web II on which the barrel I2 is located. As shown in Figure 9, a wedge I3 can be driven through this barrel and under the flange c of the side form to retain this bracket definitely in place with the edge portionsof the plate at the bifurcations 8 engaging into the grooveways Hi on opposite sides of the beam 6. Thus the beam 5 is supported at both ends. 1

Where the roadway is to be a full depth of concrete the bracket shown in Figures 9 and 12 is employed. However, Where the concrete is to be laid to a certain depth and covered over by some other surfacing material, the bracket is offset downwardly as at 15, thus eliminating the channel 9. Otherwise the bracket is constructed the same as shown in Figure 12 and in both instances accommodation is made for the flanges of the wheels of a concrete laying machine such as run along the side forms a by the provision of the channel 9 in the form shown in Figure 12 and the offset l5 as shown in Figure 8.

At definite spaced intervals along the beam 5, inverted U-shaped frames it are provided, having their leg portions depending in spaced relation at opposite sides of the beam as shown in Figure 3.

As shown in Figure 10. the leg portions of the frames iii are apertured to receive for each a bolt ll which can be inserted through any one of the openings l8 of a vertically adjustable yoke I9. These yokes l9 straddle the expansion pins 20 in the manner substantially shown in Figure 3. Figure 3 shows the expansion strip 2| which can be of any suitable formation and construction with its upper edge portion disposed in the channel of the beam 6 and with the pins 20 extending through the same.

One depending flange of the channeled beam iii) 6 is provided with a plurality of studs 22 extending laterally therefrom and through the countersunk slots 23 of the slide plate 24, which slide plate 24 is provided with corrugated areas 25 against which the corrugated sides of the pin holding plates 26 can be disposed. Each of the holder plates 26 is provided with a vertically extending slot 21 through which a bolt 28 extends, the bolt 28 extending also through the slide plate 24. Thus the plates 26 can be vertically adjusted. Each of these plates 26 is provided with lateral leg portion 29 and a strip spring 30 suitably secured as by welding to the plate 26 at 3! curves over the crotch portion of the leg so that, as shown in Figure 3, a pin 20 can be held in this crotch in a definite position.

Laterally extending studs 32 are provided at each side of the beam 6 adjacent the'ends thereof and these are engaged by the head portion 33 of the hook bar 34. This hook bar as shown in dotted lines in Figure 2 is used to properly set the apparatus and to assist in removing the same.

As is clearly shown in Figure 12, the bracket 1 is provided with a short slot 35 through which the hand bar 36 can be disposed. This hand bar is provided with a notch 31 at one end thereof for engaging the stud 38 on the end of the slide plate 24 (see Figure 2). Thus when the bar 36 is inserted through the opening 35 and pivoted, the plate 24 will be slid and the plates 26 carried by the slide plate 24 slid from under the pins 20 (that is after the concrete has been poured) thus releasing the apparatus from the pins.

If desired, instead of having the inverted U-shaped frames 06 for supporting the pins 29, the side members of these frames It can be in the form of L=shaped members constructed of angle iron and as shown in Figure 20 designated. by numeral 39. These L-shaped brackets for supporting the pins 2|] each has a depending leg 40 at its upper edge portion having depending lugs -42 for engagement into the keepers 43-44 respectively on the corresponding side of the channeled beam (is. Thus, the apparatus can be disassembled into small units which greatly facilitates repair or replacement of parts,

The flanges of .thebeam 6 have extensions 6 thereon for engaging the base of the highway, and if desired, one flange of each leg of the member hi can be extended to engage the base of the highway, as shown in dotted lines at IS in Figure 3, and in full lines in Figure 2.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit and. scope of the invention as claimed hereinaften Having described the invention, what is claimed as new is:

, 1. An expansion joint setting machine comprising spaced tracks, brackets slidable on said tracks, an elongated channelled beam supported at its ends by said brackets, a plate slidably secured to one side of said beam, a pin projecting from one side of said plate adjacent one end thereof, said bracket being apertured for receiving a tool therein, the free end of said tool being hooked for engagement with said pin for sliding said plate relative to said beam, a plurality of inverted U-shaped frames secured to the upper portion of said beam, vertically adjustable yokes secured to the depending legs of said frames for receiving expansion pins in the free ends thereof, depending plates adjustably secured to said slidable plate, said depending plates each having a laterally extending lower leg portion on which the central portion of the pin disposed in the yoke rests and a cooperating spring having one end secured to the depending plate for pressure engagement on the top portion of said pin for holding said pin on said leg portion, said slidable plate upon movement by said tool releasing said cooperating laterally extending legs and springs from the pins permitting the pins to be released from said yokes.

2. An expansion joint setting device comprising a member for engaging an expansion strip, said member having longitudinally extending grooves in the side portions of its ends close to the upper edge of the member, a pair of brackets for engaging the track parts of side forms, each bracket having a fiat plate-like portion provided with a slot for receiving an end of the first mentioned member, with the edges of the slot engaging the grooves, means for holding each bracket in adjusted position on the form, and each bracket having a part shaped to permit the passage of a wheel of a concrete machine.

3, Means for setting an expansion strip and its pins, comprising a pair or" brackets adapted to be supported from side forms, each bracket including a flat horizontal part having a slot therein, a strip-engaging member having grooves in its sides, at the ends thereof for receiving the edges of the slots when the ends of the member are placed in the slots, latch means supported from the strip-engaging member and engaging the pins, a member slidably supported on the strip-engaging member and carrying the latch means, and one bracket having an opening in its flat part through which a tool is adapted to be passed to engage the latch carrying member for moving the same to release the latches from the pins.

4. An expansion joint setting machine, comprising an expansion strip-engaging member, lateral extensions on said member having depending'partsfor engaging the pins of the strip, a longitudinally extending plate slidably arranged on the member, vertically adjustable plates carried by the sliding plate andhaving shoulderforming parts at their lower ends for engaging under the pins, spring means for holding the pins on the shoulders, and means whereby the sliding plate can be moved to release the shouldere from the pins.

5. In an expansible joint setting machine, an elongated substantially inverted, U-shaped member, means for holding the upper portion of an expansion strip in said member, said member having longitudinaily extending grooves in its side portions, at the ends thereof, said grooves being spaced slightly below the upper edge of the member, a pair of brackets for engaging side forms, each bracket having a flat plate-like portion provided with a slot for receiving an end of the member with the edge walis of the slot engaging the grooves.

GEORGE T. NELSON. 

